Service manual

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2.8 Console Device Determination...............................................................2-18
2.9 Console Power-Up Display.....................................................................2-20
2.10 Fail-Safe Loader.....................................................................................2-24
Chapter 3 Troubleshooting
3.1 Troubleshooting with LEDs......................................................................3-2
3.1.1 Cabinet Power and Fan LEDs............................................................3-4
3.2 Troubleshooting Power Problems.............................................................3-6
3.2.1 Power Control Module LEDs.............................................................3-8
3.3 Maintenance Bus (I
2
C Bus)....................................................................3-10
3.4 Running Diagnostics —Test Command..................................................3-12
3.5 Testing an Entire System........................................................................3-13
3.5.1 Testing Memory..............................................................................3-15
3.5.2 Testing PCI .....................................................................................3-17
Chapter 4 Power System
4.1 Power Supply...........................................................................................4-2
4.2 Power Control Module Features ...............................................................4-4
4.3 Power Circuit and Cover Interlocks..........................................................4-6
4.4 Power-Up/Down Sequence.......................................................................4-8
4.5 Cabinet Power Configuration Rules........................................................4-10
4.6 Pedestal Power Configuration Rules (North America and Japan) ............4-14
4.7 Pedestal Power Configuration Rules (Europe and Asia Pacific) ..............4-15
Chapter 5 Error Logs
5.1 Using Error Logs......................................................................................5-2
5.1.1 Hard Errors .......................................................................................5-4
5.1.2 Soft Errors.........................................................................................5-4
5.1.3 Error Log Events...............................................................................5-5
5.2 Using DECevent ......................................................................................5-6
5.2.1 Translating Event Files .....................................................................5-7
5.2.2 Filtering Events.................................................................................5-8
5.2.3 Selecting Alternative Reports ..........................................................5-10
5.3 Error Log Examples and Analysis ..........................................................5-11
5.3.1 MCHK 670 CPU-Detected Failure...................................................5-11
5.3.2 MCHK 670 CPU and IOD Detected Failure.....................................5-16
5.3.3 MCHK 670 Read Dirty CPU Detected Failure .................................5-22
5.3.4 MCHK 660 IOD-Detected Failure...................................................5-28
5.3.5 MCHK 630 Correctable CPU Error .................................................5-33
5.3.6 MCHK 620 Correctable Error..........................................................5-36
5.4 Troubleshooting IOD-Detected Errors....................................................5-38